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Method adopted/last revised: 2011

Method reapproved: None

REF/ISBN: IP499-2935996

Status: Current

First printed in STM books: January 2011

Scope

This standard specifies procedures for determining the aromatic carbon
content of mineral base oils within the range of 0,6 % mole to 13,8 % mole, and
of middle distillates within the range of 1,8 % mole to 41,5 % mole. The
standard does not determine the concentration of aromatic carbon in these
materials, but only measures the sum of the aromatic substructures. In 13C
nuclear magnetic resonance spectroscopy, no distinction can be made between
olefinic and aromatic carbons, and thus this standard is not applicable to
petroleum fractions with significant quantities of olefinic compounds.

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